13191394 has 8 divisors (see below), whose sum is σ = 19962540. Its totient is φ = 6537216.

The previous prime is 13191391. The next prime is 13191403. The reversal of 13191394 is 49319131.

It can be written as a sum of positive squares in 2 ways, for example, as 11992369 + 1199025 = 3463^2 + 1095^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (13191391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28959 + ... + 29410.

Almost surely, 2^13191394 is an apocalyptic number.

13191394 is a deficient number, since it is larger than the sum of its proper divisors (6771146).

13191394 is a wasteful number, since it uses less digits than its factorization.

13191394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58484.

The product of its digits is 2916, while the sum is 31.

The square root of 13191394 is about 3631.9958700417. The cubic root of 13191394 is about 236.2817782435.

The spelling of 13191394 in words is "thirteen million, one hundred ninety-one thousand, three hundred ninety-four".